/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 01:10:10,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 01:10:10,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 01:10:10,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 01:10:10,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 01:10:10,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 01:10:10,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 01:10:10,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 01:10:10,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 01:10:10,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 01:10:10,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 01:10:10,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 01:10:10,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 01:10:10,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 01:10:10,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 01:10:10,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 01:10:10,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-14 01:10:10,343 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-07-14 01:10:10,371 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 01:10:10,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 01:10:10,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 01:10:10,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 01:10:10,372 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 01:10:10,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 01:10:10,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 01:10:10,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 01:10:10,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 01:10:10,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 01:10:10,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 01:10:10,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 01:10:10,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 01:10:10,373 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 01:10:10,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 01:10:10,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 01:10:10,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 01:10:10,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 01:10:10,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 01:10:10,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 01:10:10,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 01:10:10,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 01:10:10,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 01:10:10,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 01:10:10,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 01:10:10,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 01:10:10,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 01:10:10,375 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 01:10:10,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 01:10:10,375 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-14 01:10:10,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 01:10:10,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 01:10:10,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 01:10:10,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 01:10:10,674 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 01:10:10,677 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 01:10:10,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-4.wvr.bpl [2021-07-14 01:10:10,678 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-4.wvr.bpl' [2021-07-14 01:10:10,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 01:10:10,694 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 01:10:10,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 01:10:10,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 01:10:10,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 01:10:10,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:10" (1/1) ... [2021-07-14 01:10:10,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:10" (1/1) ... [2021-07-14 01:10:10,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 01:10:10,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 01:10:10,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 01:10:10,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 01:10:10,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:10" (1/1) ... [2021-07-14 01:10:10,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:10" (1/1) ... [2021-07-14 01:10:10,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:10" (1/1) ... [2021-07-14 01:10:10,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:10" (1/1) ... [2021-07-14 01:10:10,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:10" (1/1) ... [2021-07-14 01:10:10,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:10" (1/1) ... [2021-07-14 01:10:10,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:10" (1/1) ... [2021-07-14 01:10:10,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 01:10:10,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 01:10:10,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 01:10:10,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 01:10:10,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 01:10:10,781 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 01:10:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 01:10:10,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 01:10:10,783 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 01:10:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 01:10:10,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 01:10:10,784 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 01:10:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 01:10:10,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 01:10:10,784 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 01:10:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 01:10:10,784 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 01:10:10,784 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-14 01:10:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-14 01:10:10,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-14 01:10:10,786 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 01:10:10,966 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 01:10:10,966 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 01:10:10,967 INFO L202 PluginConnector]: Adding new model ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:10:10 BoogieIcfgContainer [2021-07-14 01:10:10,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 01:10:10,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 01:10:10,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 01:10:10,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 01:10:10,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:10" (1/2) ... [2021-07-14 01:10:10,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fdaa456 and model type ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:10:10, skipping insertion in model container [2021-07-14 01:10:10,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:10:10" (2/2) ... [2021-07-14 01:10:10,972 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-4.wvr.bpl [2021-07-14 01:10:10,976 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 01:10:10,976 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 01:10:10,976 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 01:10:10,977 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 01:10:11,027 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-14 01:10:11,043 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-07-14 01:10:11,055 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 01:10:11,056 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 01:10:11,056 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 01:10:11,056 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 01:10:11,056 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 01:10:11,056 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 01:10:11,056 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 01:10:11,056 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 01:10:11,395 INFO L276 IsEmpty]: Start isEmpty. Operand has 2076 states, 1594 states have (on average 2.461731493099122) internal successors, (3924), 2075 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:11,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:11,425 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:11,425 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:11,426 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:11,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:11,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1235359963, now seen corresponding path program 1 times [2021-07-14 01:10:11,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:11,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197046564] [2021-07-14 01:10:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:11,599 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-07-14 01:10:11,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-14 01:10:11,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:11,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:11,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:11,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:11,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:11,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:11,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:11,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-14 01:10:11,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:11,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:11,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:11,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197046564] [2021-07-14 01:10:11,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197046564] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:11,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:11,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 01:10:11,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224284094] [2021-07-14 01:10:11,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-14 01:10:11,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:11,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-14 01:10:11,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-14 01:10:11,640 INFO L87 Difference]: Start difference. First operand has 2076 states, 1594 states have (on average 2.461731493099122) internal successors, (3924), 2075 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:11,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:11,711 INFO L93 Difference]: Finished difference Result 3184 states and 5975 transitions. [2021-07-14 01:10:11,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 01:10:11,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:11,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:11,725 INFO L225 Difference]: With dead ends: 3184 [2021-07-14 01:10:11,726 INFO L226 Difference]: Without dead ends: 953 [2021-07-14 01:10:11,726 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-14 01:10:11,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2021-07-14 01:10:11,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 932. [2021-07-14 01:10:11,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 931 states have (on average 2.4403866809881847) internal successors, (2272), 931 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:11,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 2272 transitions. [2021-07-14 01:10:11,837 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 2272 transitions. Word has length 32 [2021-07-14 01:10:11,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:11,838 INFO L482 AbstractCegarLoop]: Abstraction has 932 states and 2272 transitions. [2021-07-14 01:10:11,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:11,838 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 2272 transitions. [2021-07-14 01:10:11,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:11,842 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:11,843 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:11,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 01:10:11,843 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:11,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:11,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1817419397, now seen corresponding path program 2 times [2021-07-14 01:10:11,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:11,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311826343] [2021-07-14 01:10:11,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:11,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:11,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:11,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:11,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:11,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:11,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:11,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:11,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:11,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:11,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:11,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:11,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:11,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:11,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:11,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:11,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:11,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:11,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311826343] [2021-07-14 01:10:11,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311826343] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:11,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:11,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-14 01:10:11,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848644171] [2021-07-14 01:10:11,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 01:10:11,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:11,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 01:10:11,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-14 01:10:11,924 INFO L87 Difference]: Start difference. First operand 932 states and 2272 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:12,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:12,015 INFO L93 Difference]: Finished difference Result 1667 states and 3936 transitions. [2021-07-14 01:10:12,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-14 01:10:12,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:12,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:12,021 INFO L225 Difference]: With dead ends: 1667 [2021-07-14 01:10:12,021 INFO L226 Difference]: Without dead ends: 1655 [2021-07-14 01:10:12,023 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:10:12,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2021-07-14 01:10:12,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1007. [2021-07-14 01:10:12,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 1006 states have (on average 2.4324055666003974) internal successors, (2447), 1006 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:12,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 2447 transitions. [2021-07-14 01:10:12,047 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 2447 transitions. Word has length 32 [2021-07-14 01:10:12,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:12,048 INFO L482 AbstractCegarLoop]: Abstraction has 1007 states and 2447 transitions. [2021-07-14 01:10:12,048 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:12,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 2447 transitions. [2021-07-14 01:10:12,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:12,052 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:12,053 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:12,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 01:10:12,053 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:12,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:12,059 INFO L82 PathProgramCache]: Analyzing trace with hash -227761689, now seen corresponding path program 3 times [2021-07-14 01:10:12,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:12,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246401280] [2021-07-14 01:10:12,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:12,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:12,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:12,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:12,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:12,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246401280] [2021-07-14 01:10:12,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246401280] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:12,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:12,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 01:10:12,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897610367] [2021-07-14 01:10:12,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 01:10:12,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:12,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 01:10:12,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:10:12,112 INFO L87 Difference]: Start difference. First operand 1007 states and 2447 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:12,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:12,225 INFO L93 Difference]: Finished difference Result 1760 states and 4111 transitions. [2021-07-14 01:10:12,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 01:10:12,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:12,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:12,232 INFO L225 Difference]: With dead ends: 1760 [2021-07-14 01:10:12,232 INFO L226 Difference]: Without dead ends: 1748 [2021-07-14 01:10:12,232 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 22.3ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:12,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2021-07-14 01:10:12,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 993. [2021-07-14 01:10:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 992 states have (on average 2.4294354838709675) internal successors, (2410), 992 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:12,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 2410 transitions. [2021-07-14 01:10:12,283 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 2410 transitions. Word has length 32 [2021-07-14 01:10:12,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:12,283 INFO L482 AbstractCegarLoop]: Abstraction has 993 states and 2410 transitions. [2021-07-14 01:10:12,283 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:12,284 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 2410 transitions. [2021-07-14 01:10:12,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:12,286 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:12,286 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:12,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-14 01:10:12,286 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:12,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:12,287 INFO L82 PathProgramCache]: Analyzing trace with hash 424961605, now seen corresponding path program 4 times [2021-07-14 01:10:12,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:12,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748392110] [2021-07-14 01:10:12,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:12,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:12,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:12,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:12,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:12,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:12,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748392110] [2021-07-14 01:10:12,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748392110] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:12,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:12,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:10:12,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056445645] [2021-07-14 01:10:12,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:10:12,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:12,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:10:12,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:12,329 INFO L87 Difference]: Start difference. First operand 993 states and 2410 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:12,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:12,456 INFO L93 Difference]: Finished difference Result 1860 states and 4259 transitions. [2021-07-14 01:10:12,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:10:12,456 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:12,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:12,464 INFO L225 Difference]: With dead ends: 1860 [2021-07-14 01:10:12,464 INFO L226 Difference]: Without dead ends: 1798 [2021-07-14 01:10:12,464 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 34.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:10:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2021-07-14 01:10:12,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1025. [2021-07-14 01:10:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1024 states have (on average 2.3994140625) internal successors, (2457), 1024 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 2457 transitions. [2021-07-14 01:10:12,488 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 2457 transitions. Word has length 32 [2021-07-14 01:10:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:12,488 INFO L482 AbstractCegarLoop]: Abstraction has 1025 states and 2457 transitions. [2021-07-14 01:10:12,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 2457 transitions. [2021-07-14 01:10:12,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:12,490 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:12,490 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:12,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-14 01:10:12,491 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:12,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:12,491 INFO L82 PathProgramCache]: Analyzing trace with hash 599654953, now seen corresponding path program 5 times [2021-07-14 01:10:12,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:12,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267070794] [2021-07-14 01:10:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:12,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:12,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:12,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:12,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:12,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:12,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267070794] [2021-07-14 01:10:12,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267070794] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:12,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:12,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 01:10:12,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746005619] [2021-07-14 01:10:12,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 01:10:12,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:12,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 01:10:12,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:10:12,545 INFO L87 Difference]: Start difference. First operand 1025 states and 2457 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:12,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:12,625 INFO L93 Difference]: Finished difference Result 1777 states and 4112 transitions. [2021-07-14 01:10:12,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 01:10:12,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:12,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:12,631 INFO L225 Difference]: With dead ends: 1777 [2021-07-14 01:10:12,631 INFO L226 Difference]: Without dead ends: 1753 [2021-07-14 01:10:12,632 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:12,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2021-07-14 01:10:12,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1179. [2021-07-14 01:10:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1178 states have (on average 2.3556876061120544) internal successors, (2775), 1178 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:12,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 2775 transitions. [2021-07-14 01:10:12,667 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 2775 transitions. Word has length 32 [2021-07-14 01:10:12,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:12,669 INFO L482 AbstractCegarLoop]: Abstraction has 1179 states and 2775 transitions. [2021-07-14 01:10:12,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:12,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 2775 transitions. [2021-07-14 01:10:12,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:12,671 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:12,671 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:12,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-14 01:10:12,672 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:12,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:12,672 INFO L82 PathProgramCache]: Analyzing trace with hash 2057702023, now seen corresponding path program 6 times [2021-07-14 01:10:12,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:12,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473509420] [2021-07-14 01:10:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:12,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:12,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:12,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:12,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:12,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:12,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473509420] [2021-07-14 01:10:12,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473509420] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:12,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:12,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:10:12,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772285378] [2021-07-14 01:10:12,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:10:12,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:12,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:10:12,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:12,744 INFO L87 Difference]: Start difference. First operand 1179 states and 2775 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:12,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:12,882 INFO L93 Difference]: Finished difference Result 2104 states and 4869 transitions. [2021-07-14 01:10:12,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:10:12,883 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:12,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:12,890 INFO L225 Difference]: With dead ends: 2104 [2021-07-14 01:10:12,890 INFO L226 Difference]: Without dead ends: 2066 [2021-07-14 01:10:12,891 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 41.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:10:12,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2021-07-14 01:10:12,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1279. [2021-07-14 01:10:12,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 1278 states have (on average 2.375586854460094) internal successors, (3036), 1278 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 3036 transitions. [2021-07-14 01:10:12,923 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 3036 transitions. Word has length 32 [2021-07-14 01:10:12,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:12,923 INFO L482 AbstractCegarLoop]: Abstraction has 1279 states and 3036 transitions. [2021-07-14 01:10:12,923 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 3036 transitions. [2021-07-14 01:10:12,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:12,926 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:12,926 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:12,926 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-14 01:10:12,926 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:12,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:12,927 INFO L82 PathProgramCache]: Analyzing trace with hash 406901029, now seen corresponding path program 7 times [2021-07-14 01:10:12,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:12,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184541976] [2021-07-14 01:10:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:12,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:12,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:12,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:12,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:12,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:12,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:12,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:12,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184541976] [2021-07-14 01:10:12,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184541976] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:12,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:12,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 01:10:12,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24271900] [2021-07-14 01:10:12,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 01:10:12,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:12,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 01:10:12,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:10:12,971 INFO L87 Difference]: Start difference. First operand 1279 states and 3036 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:13,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:13,057 INFO L93 Difference]: Finished difference Result 1804 states and 4093 transitions. [2021-07-14 01:10:13,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 01:10:13,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:13,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:13,063 INFO L225 Difference]: With dead ends: 1804 [2021-07-14 01:10:13,063 INFO L226 Difference]: Without dead ends: 1792 [2021-07-14 01:10:13,063 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 20.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:13,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2021-07-14 01:10:13,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1193. [2021-07-14 01:10:13,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1192 states have (on average 2.3221476510067114) internal successors, (2768), 1192 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:13,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 2768 transitions. [2021-07-14 01:10:13,090 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 2768 transitions. Word has length 32 [2021-07-14 01:10:13,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:13,090 INFO L482 AbstractCegarLoop]: Abstraction has 1193 states and 2768 transitions. [2021-07-14 01:10:13,090 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:13,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 2768 transitions. [2021-07-14 01:10:13,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:13,093 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:13,093 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:13,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-14 01:10:13,094 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:13,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:13,094 INFO L82 PathProgramCache]: Analyzing trace with hash -854507993, now seen corresponding path program 8 times [2021-07-14 01:10:13,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:13,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230924268] [2021-07-14 01:10:13,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:13,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:13,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:13,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:13,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:13,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230924268] [2021-07-14 01:10:13,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230924268] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:13,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:13,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:10:13,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273656703] [2021-07-14 01:10:13,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:10:13,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:13,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:10:13,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:13,146 INFO L87 Difference]: Start difference. First operand 1193 states and 2768 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:13,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:13,255 INFO L93 Difference]: Finished difference Result 1358 states and 2835 transitions. [2021-07-14 01:10:13,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:10:13,255 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:13,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:13,259 INFO L225 Difference]: With dead ends: 1358 [2021-07-14 01:10:13,259 INFO L226 Difference]: Without dead ends: 1274 [2021-07-14 01:10:13,260 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 28.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:10:13,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-07-14 01:10:13,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 865. [2021-07-14 01:10:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 864 states have (on average 2.146990740740741) internal successors, (1855), 864 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1855 transitions. [2021-07-14 01:10:13,274 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1855 transitions. Word has length 32 [2021-07-14 01:10:13,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:13,275 INFO L482 AbstractCegarLoop]: Abstraction has 865 states and 1855 transitions. [2021-07-14 01:10:13,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:13,275 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1855 transitions. [2021-07-14 01:10:13,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:13,277 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:13,277 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:13,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-14 01:10:13,277 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:13,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:13,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1497414359, now seen corresponding path program 9 times [2021-07-14 01:10:13,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:13,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262163439] [2021-07-14 01:10:13,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:13,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:13,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:13,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:13,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262163439] [2021-07-14 01:10:13,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262163439] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:13,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:13,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 01:10:13,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472851161] [2021-07-14 01:10:13,324 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 01:10:13,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:13,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 01:10:13,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:10:13,325 INFO L87 Difference]: Start difference. First operand 865 states and 1855 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:13,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:13,423 INFO L93 Difference]: Finished difference Result 1367 states and 2875 transitions. [2021-07-14 01:10:13,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 01:10:13,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:13,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:13,427 INFO L225 Difference]: With dead ends: 1367 [2021-07-14 01:10:13,427 INFO L226 Difference]: Without dead ends: 1343 [2021-07-14 01:10:13,428 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 25.8ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:10:13,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2021-07-14 01:10:13,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 853. [2021-07-14 01:10:13,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 2.124413145539906) internal successors, (1810), 852 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1810 transitions. [2021-07-14 01:10:13,444 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1810 transitions. Word has length 32 [2021-07-14 01:10:13,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:13,444 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 1810 transitions. [2021-07-14 01:10:13,444 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:13,445 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1810 transitions. [2021-07-14 01:10:13,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:13,446 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:13,446 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:13,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-14 01:10:13,446 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:13,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:13,447 INFO L82 PathProgramCache]: Analyzing trace with hash -39367289, now seen corresponding path program 10 times [2021-07-14 01:10:13,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:13,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094561307] [2021-07-14 01:10:13,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:13,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:13,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:13,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:13,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094561307] [2021-07-14 01:10:13,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094561307] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:13,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:13,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:10:13,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41519440] [2021-07-14 01:10:13,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:10:13,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:13,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:10:13,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:13,493 INFO L87 Difference]: Start difference. First operand 853 states and 1810 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:13,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:13,622 INFO L93 Difference]: Finished difference Result 1351 states and 2820 transitions. [2021-07-14 01:10:13,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:10:13,622 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:13,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:13,627 INFO L225 Difference]: With dead ends: 1351 [2021-07-14 01:10:13,627 INFO L226 Difference]: Without dead ends: 1291 [2021-07-14 01:10:13,627 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 40.8ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:10:13,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-07-14 01:10:13,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 869. [2021-07-14 01:10:13,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 868 states have (on average 2.119815668202765) internal successors, (1840), 868 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:13,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1840 transitions. [2021-07-14 01:10:13,641 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1840 transitions. Word has length 32 [2021-07-14 01:10:13,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:13,642 INFO L482 AbstractCegarLoop]: Abstraction has 869 states and 1840 transitions. [2021-07-14 01:10:13,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:13,642 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1840 transitions. [2021-07-14 01:10:13,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:13,643 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:13,643 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:13,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-14 01:10:13,644 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:13,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1273840253, now seen corresponding path program 11 times [2021-07-14 01:10:13,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:13,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876057965] [2021-07-14 01:10:13,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:13,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:13,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:13,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:13,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:13,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876057965] [2021-07-14 01:10:13,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876057965] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:13,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:13,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:10:13,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638550718] [2021-07-14 01:10:13,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:10:13,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:13,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:10:13,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:10:13,701 INFO L87 Difference]: Start difference. First operand 869 states and 1840 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:13,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:13,897 INFO L93 Difference]: Finished difference Result 1407 states and 2920 transitions. [2021-07-14 01:10:13,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 01:10:13,897 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:13,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:13,901 INFO L225 Difference]: With dead ends: 1407 [2021-07-14 01:10:13,901 INFO L226 Difference]: Without dead ends: 1345 [2021-07-14 01:10:13,902 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 56.8ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-07-14 01:10:13,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2021-07-14 01:10:13,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 883. [2021-07-14 01:10:13,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 2.1031746031746033) internal successors, (1855), 882 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:13,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1855 transitions. [2021-07-14 01:10:13,925 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1855 transitions. Word has length 32 [2021-07-14 01:10:13,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:13,926 INFO L482 AbstractCegarLoop]: Abstraction has 883 states and 1855 transitions. [2021-07-14 01:10:13,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:13,926 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1855 transitions. [2021-07-14 01:10:13,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:13,927 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:13,927 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:13,927 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-14 01:10:13,927 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:13,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:13,928 INFO L82 PathProgramCache]: Analyzing trace with hash 817560393, now seen corresponding path program 12 times [2021-07-14 01:10:13,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:13,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939226779] [2021-07-14 01:10:13,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:13,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:13,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:13,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:13,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:13,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:13,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:13,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939226779] [2021-07-14 01:10:13,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939226779] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:13,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:13,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 01:10:13,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796378356] [2021-07-14 01:10:13,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 01:10:13,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:13,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 01:10:13,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:10:13,967 INFO L87 Difference]: Start difference. First operand 883 states and 1855 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:14,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:14,064 INFO L93 Difference]: Finished difference Result 1357 states and 2801 transitions. [2021-07-14 01:10:14,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 01:10:14,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:14,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:14,069 INFO L225 Difference]: With dead ends: 1357 [2021-07-14 01:10:14,069 INFO L226 Difference]: Without dead ends: 1349 [2021-07-14 01:10:14,069 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.7ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:10:14,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2021-07-14 01:10:14,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 879. [2021-07-14 01:10:14,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 878 states have (on average 2.0990888382687927) internal successors, (1843), 878 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1843 transitions. [2021-07-14 01:10:14,085 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1843 transitions. Word has length 32 [2021-07-14 01:10:14,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:14,085 INFO L482 AbstractCegarLoop]: Abstraction has 879 states and 1843 transitions. [2021-07-14 01:10:14,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:14,085 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1843 transitions. [2021-07-14 01:10:14,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:14,087 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:14,087 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:14,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-14 01:10:14,087 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:14,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:14,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1470283687, now seen corresponding path program 13 times [2021-07-14 01:10:14,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:14,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843211839] [2021-07-14 01:10:14,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:14,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:14,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:14,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:14,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843211839] [2021-07-14 01:10:14,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843211839] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:14,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:14,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:10:14,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497891503] [2021-07-14 01:10:14,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:10:14,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:14,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:10:14,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:14,132 INFO L87 Difference]: Start difference. First operand 879 states and 1843 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:14,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:14,245 INFO L93 Difference]: Finished difference Result 1367 states and 2802 transitions. [2021-07-14 01:10:14,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:10:14,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:14,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:14,261 INFO L225 Difference]: With dead ends: 1367 [2021-07-14 01:10:14,262 INFO L226 Difference]: Without dead ends: 1295 [2021-07-14 01:10:14,262 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 32.7ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:10:14,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2021-07-14 01:10:14,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 857. [2021-07-14 01:10:14,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 856 states have (on average 2.0794392523364484) internal successors, (1780), 856 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:14,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1780 transitions. [2021-07-14 01:10:14,278 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1780 transitions. Word has length 32 [2021-07-14 01:10:14,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:14,278 INFO L482 AbstractCegarLoop]: Abstraction has 857 states and 1780 transitions. [2021-07-14 01:10:14,278 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:14,278 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1780 transitions. [2021-07-14 01:10:14,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:14,280 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:14,280 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:14,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-14 01:10:14,280 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:14,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:14,280 INFO L82 PathProgramCache]: Analyzing trace with hash -288315485, now seen corresponding path program 14 times [2021-07-14 01:10:14,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:14,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492142334] [2021-07-14 01:10:14,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:14,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:14,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:14,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:14,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:14,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492142334] [2021-07-14 01:10:14,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492142334] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:14,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:14,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:10:14,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637668719] [2021-07-14 01:10:14,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:10:14,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:14,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:10:14,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:10:14,320 INFO L87 Difference]: Start difference. First operand 857 states and 1780 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:14,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:14,485 INFO L93 Difference]: Finished difference Result 1378 states and 2789 transitions. [2021-07-14 01:10:14,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 01:10:14,485 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:14,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:14,487 INFO L225 Difference]: With dead ends: 1378 [2021-07-14 01:10:14,487 INFO L226 Difference]: Without dead ends: 1235 [2021-07-14 01:10:14,488 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 56.0ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-07-14 01:10:14,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2021-07-14 01:10:14,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 797. [2021-07-14 01:10:14,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 2.0753768844221105) internal successors, (1652), 796 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:14,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1652 transitions. [2021-07-14 01:10:14,516 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1652 transitions. Word has length 32 [2021-07-14 01:10:14,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:14,516 INFO L482 AbstractCegarLoop]: Abstraction has 797 states and 1652 transitions. [2021-07-14 01:10:14,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:14,516 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1652 transitions. [2021-07-14 01:10:14,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:14,517 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:14,518 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:14,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-14 01:10:14,518 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:14,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:14,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1686264217, now seen corresponding path program 15 times [2021-07-14 01:10:14,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:14,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382603859] [2021-07-14 01:10:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:14,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:14,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:14,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:14,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:14,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382603859] [2021-07-14 01:10:14,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382603859] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:14,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:14,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:10:14,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129756875] [2021-07-14 01:10:14,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:10:14,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:14,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:10:14,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:14,549 INFO L87 Difference]: Start difference. First operand 797 states and 1652 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:14,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:14,655 INFO L93 Difference]: Finished difference Result 1189 states and 2423 transitions. [2021-07-14 01:10:14,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:10:14,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:14,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:14,657 INFO L225 Difference]: With dead ends: 1189 [2021-07-14 01:10:14,657 INFO L226 Difference]: Without dead ends: 1169 [2021-07-14 01:10:14,659 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 28.6ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:10:14,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2021-07-14 01:10:14,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 815. [2021-07-14 01:10:14,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 814 states have (on average 2.0614250614250613) internal successors, (1678), 814 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:14,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1678 transitions. [2021-07-14 01:10:14,673 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1678 transitions. Word has length 32 [2021-07-14 01:10:14,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:14,673 INFO L482 AbstractCegarLoop]: Abstraction has 815 states and 1678 transitions. [2021-07-14 01:10:14,673 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:14,673 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1678 transitions. [2021-07-14 01:10:14,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:14,674 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:14,674 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:14,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-14 01:10:14,674 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:14,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:14,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1269936187, now seen corresponding path program 16 times [2021-07-14 01:10:14,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:14,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251851669] [2021-07-14 01:10:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:14,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:14,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:14,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:14,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251851669] [2021-07-14 01:10:14,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251851669] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:14,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:14,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:10:14,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250304279] [2021-07-14 01:10:14,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:10:14,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:14,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:10:14,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:10:14,732 INFO L87 Difference]: Start difference. First operand 815 states and 1678 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:14,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:14,886 INFO L93 Difference]: Finished difference Result 1230 states and 2487 transitions. [2021-07-14 01:10:14,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 01:10:14,887 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:14,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:14,889 INFO L225 Difference]: With dead ends: 1230 [2021-07-14 01:10:14,889 INFO L226 Difference]: Without dead ends: 1177 [2021-07-14 01:10:14,889 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-07-14 01:10:14,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-07-14 01:10:14,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 803. [2021-07-14 01:10:14,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 2.071072319201995) internal successors, (1661), 802 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:14,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1661 transitions. [2021-07-14 01:10:14,911 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1661 transitions. Word has length 32 [2021-07-14 01:10:14,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:14,911 INFO L482 AbstractCegarLoop]: Abstraction has 803 states and 1661 transitions. [2021-07-14 01:10:14,911 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:14,912 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1661 transitions. [2021-07-14 01:10:14,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:14,913 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:14,913 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:14,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-14 01:10:14,913 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:14,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:14,914 INFO L82 PathProgramCache]: Analyzing trace with hash -679157873, now seen corresponding path program 17 times [2021-07-14 01:10:14,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:14,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311086309] [2021-07-14 01:10:14,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:14,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:14,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:14,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:14,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:14,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:14,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:14,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311086309] [2021-07-14 01:10:14,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311086309] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:14,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:14,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 01:10:14,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264172271] [2021-07-14 01:10:14,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 01:10:14,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:14,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 01:10:14,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:10:14,952 INFO L87 Difference]: Start difference. First operand 803 states and 1661 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:15,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:15,038 INFO L93 Difference]: Finished difference Result 846 states and 1668 transitions. [2021-07-14 01:10:15,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 01:10:15,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:15,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:15,040 INFO L225 Difference]: With dead ends: 846 [2021-07-14 01:10:15,040 INFO L226 Difference]: Without dead ends: 798 [2021-07-14 01:10:15,040 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:15,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-07-14 01:10:15,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 471. [2021-07-14 01:10:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.9936170212765958) internal successors, (937), 470 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 937 transitions. [2021-07-14 01:10:15,047 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 937 transitions. Word has length 32 [2021-07-14 01:10:15,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:15,048 INFO L482 AbstractCegarLoop]: Abstraction has 471 states and 937 transitions. [2021-07-14 01:10:15,048 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:15,048 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 937 transitions. [2021-07-14 01:10:15,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:15,048 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:15,049 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:15,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-14 01:10:15,049 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:15,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:15,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1129651409, now seen corresponding path program 18 times [2021-07-14 01:10:15,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:15,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310117752] [2021-07-14 01:10:15,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:15,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:15,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:15,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:15,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:15,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:15,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:15,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:15,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:15,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:15,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:15,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:15,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:15,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:15,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:15,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:15,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:15,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:15,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:15,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310117752] [2021-07-14 01:10:15,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310117752] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:15,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:15,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:10:15,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651324712] [2021-07-14 01:10:15,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:10:15,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:15,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:10:15,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:15,077 INFO L87 Difference]: Start difference. First operand 471 states and 937 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:15,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:15,146 INFO L93 Difference]: Finished difference Result 214 states and 328 transitions. [2021-07-14 01:10:15,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:10:15,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:15,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:15,147 INFO L225 Difference]: With dead ends: 214 [2021-07-14 01:10:15,147 INFO L226 Difference]: Without dead ends: 112 [2021-07-14 01:10:15,147 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 29.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:10:15,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-07-14 01:10:15,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 78. [2021-07-14 01:10:15,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.5584415584415585) internal successors, (120), 77 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:15,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 120 transitions. [2021-07-14 01:10:15,148 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 120 transitions. Word has length 32 [2021-07-14 01:10:15,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:15,149 INFO L482 AbstractCegarLoop]: Abstraction has 78 states and 120 transitions. [2021-07-14 01:10:15,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:15,149 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 120 transitions. [2021-07-14 01:10:15,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-14 01:10:15,149 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:15,149 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:15,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-14 01:10:15,149 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:10:15,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:15,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1984228335, now seen corresponding path program 19 times [2021-07-14 01:10:15,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:15,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154579530] [2021-07-14 01:10:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:15,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:15,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:15,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:15,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:15,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:15,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:15,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:15,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:15,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:15,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:15,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:15,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:15,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:15,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:15,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:15,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:15,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:15,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154579530] [2021-07-14 01:10:15,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154579530] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:15,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:15,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:10:15,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240970692] [2021-07-14 01:10:15,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:10:15,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:15,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:10:15,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:10:15,193 INFO L87 Difference]: Start difference. First operand 78 states and 120 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:15,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:15,253 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2021-07-14 01:10:15,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 01:10:15,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-14 01:10:15,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:15,253 INFO L225 Difference]: With dead ends: 53 [2021-07-14 01:10:15,253 INFO L226 Difference]: Without dead ends: 0 [2021-07-14 01:10:15,254 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 45.6ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-07-14 01:10:15,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-14 01:10:15,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-14 01:10:15,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:15,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-14 01:10:15,254 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-07-14 01:10:15,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:15,254 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-14 01:10:15,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:15,254 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-14 01:10:15,254 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-14 01:10:15,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-14 01:10:15,256 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-14 01:10:15,257 INFO L202 PluginConnector]: Adding new model ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 01:10:15 BasicIcfg [2021-07-14 01:10:15,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-14 01:10:15,257 INFO L168 Benchmark]: Toolchain (without parser) took 4563.43 ms. Allocated memory was 192.9 MB in the beginning and 281.0 MB in the end (delta: 88.1 MB). Free memory was 172.4 MB in the beginning and 181.4 MB in the end (delta: -9.0 MB). Peak memory consumption was 80.1 MB. Max. memory is 8.0 GB. [2021-07-14 01:10:15,257 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 192.9 MB. Free memory is still 173.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 01:10:15,257 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.05 ms. Allocated memory is still 192.9 MB. Free memory was 172.2 MB in the beginning and 170.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-14 01:10:15,258 INFO L168 Benchmark]: Boogie Preprocessor took 15.91 ms. Allocated memory is still 192.9 MB. Free memory was 170.8 MB in the beginning and 169.9 MB in the end (delta: 922.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-14 01:10:15,258 INFO L168 Benchmark]: RCFGBuilder took 234.72 ms. Allocated memory is still 192.9 MB. Free memory was 169.7 MB in the beginning and 155.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-14 01:10:15,258 INFO L168 Benchmark]: TraceAbstraction took 4288.30 ms. Allocated memory was 192.9 MB in the beginning and 281.0 MB in the end (delta: 88.1 MB). Free memory was 155.6 MB in the beginning and 181.4 MB in the end (delta: -25.8 MB). Peak memory consumption was 63.3 MB. Max. memory is 8.0 GB. [2021-07-14 01:10:15,258 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 192.9 MB. Free memory is still 173.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 20.05 ms. Allocated memory is still 192.9 MB. Free memory was 172.2 MB in the beginning and 170.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 15.91 ms. Allocated memory is still 192.9 MB. Free memory was 170.8 MB in the beginning and 169.9 MB in the end (delta: 922.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 234.72 ms. Allocated memory is still 192.9 MB. Free memory was 169.7 MB in the beginning and 155.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4288.30 ms. Allocated memory was 192.9 MB in the beginning and 281.0 MB in the end (delta: 88.1 MB). Free memory was 155.6 MB in the beginning and 181.4 MB in the end (delta: -25.8 MB). Peak memory consumption was 63.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 6619, positive: 6076, positive conditional: 6076, positive unconditional: 0, negative: 543, negative conditional: 543, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 6619, positive: 6076, positive conditional: 0, positive unconditional: 6076, negative: 543, negative conditional: 0, negative unconditional: 543, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 293, positive: 268, positive conditional: 0, positive unconditional: 268, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 293, positive: 248, positive conditional: 0, positive unconditional: 248, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 45, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 102, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6619, positive: 5808, positive conditional: 0, positive unconditional: 5808, negative: 518, negative conditional: 0, negative unconditional: 518, unknown: 293, unknown conditional: 0, unknown unconditional: 293] , Statistics on independence cache: Total cache size (in pairs): 293, Positive cache size: 268, Positive conditional cache size: 0, Positive unconditional cache size: 268, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Independence queries for same thread: 0 - PositiveResult [Line: 80]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 9 procedures, 68 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4200.8ms, OverallIterations: 19, TraceHistogramMax: 1, EmptinessCheckTime: 71.8ms, AutomataDifference: 2223.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 330.9ms, PartialOrderReductionTime: 320.5ms, HoareTripleCheckerStatistics: 711 SDtfs, 1248 SDslu, 2372 SDs, 0 SdLazy, 2891 SolverSat, 582 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1221.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 616.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2076occurred in iteration=0, InterpolantAutomatonStates: 165, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 446.9ms AutomataMinimizationTime, 19 MinimizatonAttempts, 8375 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.6ms SsaConstructionTime, 129.9ms SatisfiabilityAnalysisTime, 791.6ms InterpolantComputationTime, 608 NumberOfCodeBlocks, 608 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 589 ConstructedInterpolants, 0 QuantifiedInterpolants, 1716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...